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Relay control system based on zero-crossing delay control

A relay control and delay control technology, applied in relays, circuits, electric switches, etc., can solve the problems of normally closed relays such as large impact, large current, and cost constraints, and achieve the effect of improving the use effect and increasing the service life

Pending Publication Date: 2019-03-22
SHANGHAI WULING SHENGTONG INFORMATION TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large current of the sodium lamp, the impact on the normally closed relay is greater at the moment of switching the lamp, which seriously affects the service life of the normally closed relay
[0004] The current solution to this

Method used

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  • Relay control system based on zero-crossing delay control
  • Relay control system based on zero-crossing delay control

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0019] Such as figure 1 As shown, a relay control system based on zero-crossing delay control provided by the present invention includes: an acquisition module, a main control module, a storage module, and a control module; in a preferred example, such as figure 2 As shown, it also includes a temperature acquisition circuit. The main control module collects the internal temperature of the device in real time through the temperature acquisition circuit, so that the main control module can collect the in...

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Abstract

The invention provides a relay control system based on zero-crossing delay control. The relay control system comprises an acquisition module, a main control module, a storage module and a control module, wherein the main control module obtains a relay switching-off delay time and a relay switching-on delay time by means of relay calibration, calculates a control delay time and stores the control delay time, combines with a zero-crossing point signal provided by means of the acquisition module, and realizes zero-crossing point control of the control module. The relay control system based on zero-crossing delay control mainly improves the using effect of a relay from the aspect of software, and adopts a delay control algorithm so that the relay is positioned at the zero point at the moment of turning on or off a lamp and voltages at both ends of the relay are zero, thus the impact to the relay is minimized, and the service life of the relay is prolonged. In particular, the main control module acquires the internal temperature of equipment in real time, compensates for the control delay time according to the acquired temperature, and performs calibration to obtain the switching-on andswitching-off delay times, so that the switching-on and switching-off of the relay can be at the zero point under the current temperature condition.

Description

technical field [0001] The invention relates to the field of street lamp intelligent control, in particular to a relay control system based on zero-crossing delay control. Background technique [0002] Zero-crossing detection refers to the detection made by the system when the waveform passes through the zero position when the waveform changes from the positive half cycle to the negative half cycle in the AC system. Closing delay time refers to the time from when the relay receives the closing signal to when the relay operates the contact to complete the closing action. The off-delay time refers to the time from when the relay receives the off signal to when the relay operation contact completes the off action. [0003] The control of street lamps in the current market is dominated by normally open relays. Due to the insufficient anti-surge capability of normally closed relays, they are currently only suitable for the control of LED lights. At that time, sodium lamps still ...

Claims

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Application Information

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IPC IPC(8): H01H47/18H01H9/56
CPCH01H47/18H01H9/56
Inventor 储昭兵刘凯凯耿朋孙璟周满满
Owner SHANGHAI WULING SHENGTONG INFORMATION TECH CO LTD
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